Security update for xen

Announcement ID:	SUSE-SU-2018:0438-1
Rating:	important
References:	bsc#1027519 bsc#1035442 bsc#1051729 bsc#1061081 bsc#1067317 bsc#1068032 bsc#1070158 bsc#1070159 bsc#1070160 bsc#1070163 bsc#1074562 bsc#1076116 bsc#1076180
Cross-References:	CVE-2017-15595 CVE-2017-17563 CVE-2017-17564 CVE-2017-17565 CVE-2017-17566 CVE-2017-18030 CVE-2017-5715 CVE-2017-5753 CVE-2017-5754 CVE-2018-5683
CVSS scores:	CVE-2017-15595 ( SUSE ): 8.1 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H CVE-2017-15595 ( NVD ): 8.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2017-17563 ( SUSE ): 6.5 CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L CVE-2017-17563 ( NVD ): 7.8 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2017-17564 ( SUSE ): 6.5 CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L CVE-2017-17564 ( NVD ): 7.8 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2017-17565 ( SUSE ): 4.1 CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L CVE-2017-17565 ( NVD ): 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2017-17566 ( SUSE ): 6.5 CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L CVE-2017-17566 ( NVD ): 7.8 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2017-18030 ( SUSE ): 2.8 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L CVE-2017-18030 ( NVD ): 4.4 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVE-2017-5715 ( SUSE ): 7.1 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVE-2017-5715 ( NVD ): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CVE-2017-5715 ( NVD ): 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CVE-2017-5753 ( SUSE ): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CVE-2017-5753 ( SUSE ): 7.1 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVE-2017-5753 ( NVD ): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CVE-2017-5753 ( NVD ): 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CVE-2017-5754 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVE-2017-5754 ( SUSE ): 7.1 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVE-2017-5754 ( NVD ): 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CVE-2018-5683 ( SUSE ): 4.2 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:L CVE-2018-5683 ( NVD ): 6.0 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
Affected Products:	SUSE Container as a Service Platform 1.0 SUSE Container as a Service Platform 2.0 SUSE Linux Enterprise Desktop 12 SP3 SUSE Linux Enterprise High Performance Computing 12 SP3 SUSE Linux Enterprise Server 12 SP3 SUSE Linux Enterprise Server for SAP Applications 12 SP3 SUSE Linux Enterprise Software Development Kit 12 SP3

An update that solves 10 vulnerabilities and has three security fixes can now be installed.

Description:

This update for xen fixes several issues.

These security issues were fixed:

• CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via side effects of speculative execution, aka "Spectre" and "Meltdown" attacks (bsc#1074562, bsc#1068032)
• CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded recursion, stack consumption, and hypervisor crash) or possibly gain privileges via crafted page-table stacking (bsc#1061081)
• CVE-2017-17566: Prevent PV guest OS users to cause a denial of service (host OS crash) or gain host OS privileges in shadow mode by mapping a certain auxiliary page (bsc#1070158).
• CVE-2017-17563: Prevent guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging an incorrect mask for reference-count overflow checking in shadow mode (bsc#1070159).
• CVE-2017-17564: Prevent guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging incorrect error handling for reference counting in shadow mode (bsc#1070160).
• CVE-2017-17565: Prevent PV guest OS users to cause a denial of service (host OS crash) if shadow mode and log-dirty mode are in place, because of an incorrect assertion related to M2P (bsc#1070163).
• CVE-2018-5683: The vga_draw_text function allowed local OS guest privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) by leveraging improper memory address validation (bsc#1076116).
• CVE-2017-18030: The cirrus_invalidate_region function allowed local OS guest privileged users to cause a denial of service (out-of-bounds array access and QEMU process crash) via vectors related to negative pitch (bsc#1076180).

These non-security issues were fixed:

• bsc#1067317: pass cache=writeback|unsafe|directsync to qemu depending on the libxl disk settings
• bsc#1051729: Prevent invalid symlinks after install of SLES 12 SP2
• bsc#1035442: Increased the value of LIBXL_DESTROY_TIMEOUT from 10 to 100 seconds. If many domUs shutdown in parallel the backends couldn't keep up
• bsc#1027519: Added several upstream patches

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

• SUSE Linux Enterprise Desktop 12 SP3
  zypper in -t patch SUSE-SLE-DESKTOP-12-SP3-2018-302=1
• SUSE Linux Enterprise Software Development Kit 12 SP3
  zypper in -t patch SUSE-SLE-SDK-12-SP3-2018-302=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-2018-302=1
• SUSE Linux Enterprise Server 12 SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-2018-302=1
• SUSE Linux Enterprise High Performance Computing 12 SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-2018-302=1
• SUSE Container as a Service Platform 2.0
  To install this update, use the SUSE CaaS Platform 'skuba' tool. It will inform you if it detects new updates and let you then trigger updating of the complete cluster in a controlled way.
• SUSE Container as a Service Platform 1.0
  To install this update, use the SUSE CaaS Platform 'skuba' tool. It will inform you if it detects new updates and let you then trigger updating of the complete cluster in a controlled way.

Package List:

• SUSE Linux Enterprise Desktop 12 SP3 (x86_64)
  • xen-libs-4.9.1_08-3.26.1
  • xen-4.9.1_08-3.26.1
  • xen-libs-debuginfo-32bit-4.9.1_08-3.26.1
  • xen-libs-32bit-4.9.1_08-3.26.1
  • xen-debugsource-4.9.1_08-3.26.1
  • xen-libs-debuginfo-4.9.1_08-3.26.1
• SUSE Linux Enterprise Software Development Kit 12 SP3 (aarch64 x86_64)
  • xen-devel-4.9.1_08-3.26.1
  • xen-debugsource-4.9.1_08-3.26.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP3 (x86_64)
  • xen-libs-4.9.1_08-3.26.1
  • xen-4.9.1_08-3.26.1
  • xen-libs-debuginfo-32bit-4.9.1_08-3.26.1
  • xen-tools-4.9.1_08-3.26.1
  • xen-libs-32bit-4.9.1_08-3.26.1
  • xen-tools-domU-debuginfo-4.9.1_08-3.26.1
  • xen-debugsource-4.9.1_08-3.26.1
  • xen-tools-debuginfo-4.9.1_08-3.26.1
  • xen-libs-debuginfo-4.9.1_08-3.26.1
  • xen-doc-html-4.9.1_08-3.26.1
  • xen-tools-domU-4.9.1_08-3.26.1
• SUSE Linux Enterprise Server 12 SP3 (x86_64)
  • xen-libs-4.9.1_08-3.26.1
  • xen-4.9.1_08-3.26.1
  • xen-libs-debuginfo-32bit-4.9.1_08-3.26.1
  • xen-tools-4.9.1_08-3.26.1
  • xen-libs-32bit-4.9.1_08-3.26.1
  • xen-tools-domU-debuginfo-4.9.1_08-3.26.1
  • xen-debugsource-4.9.1_08-3.26.1
  • xen-tools-debuginfo-4.9.1_08-3.26.1
  • xen-libs-debuginfo-4.9.1_08-3.26.1
  • xen-doc-html-4.9.1_08-3.26.1
  • xen-tools-domU-4.9.1_08-3.26.1
• SUSE Linux Enterprise High Performance Computing 12 SP3 (x86_64)
  • xen-libs-4.9.1_08-3.26.1
  • xen-4.9.1_08-3.26.1
  • xen-libs-debuginfo-32bit-4.9.1_08-3.26.1
  • xen-tools-4.9.1_08-3.26.1
  • xen-libs-32bit-4.9.1_08-3.26.1
  • xen-tools-domU-debuginfo-4.9.1_08-3.26.1
  • xen-debugsource-4.9.1_08-3.26.1
  • xen-tools-debuginfo-4.9.1_08-3.26.1
  • xen-libs-debuginfo-4.9.1_08-3.26.1
  • xen-doc-html-4.9.1_08-3.26.1
  • xen-tools-domU-4.9.1_08-3.26.1
• SUSE Container as a Service Platform 2.0 (x86_64)
  • xen-libs-4.9.1_08-3.26.1
  • xen-tools-domU-debuginfo-4.9.1_08-3.26.1
  • xen-debugsource-4.9.1_08-3.26.1
  • xen-libs-debuginfo-4.9.1_08-3.26.1
  • xen-tools-domU-4.9.1_08-3.26.1
• SUSE Container as a Service Platform 1.0 (x86_64)
  • xen-libs-4.9.1_08-3.26.1
  • xen-tools-domU-debuginfo-4.9.1_08-3.26.1
  • xen-debugsource-4.9.1_08-3.26.1
  • xen-libs-debuginfo-4.9.1_08-3.26.1
  • xen-tools-domU-4.9.1_08-3.26.1

References:

• https://www.suse.com/security/cve/CVE-2017-15595.html
• https://www.suse.com/security/cve/CVE-2017-17563.html
• https://www.suse.com/security/cve/CVE-2017-17564.html
• https://www.suse.com/security/cve/CVE-2017-17565.html
• https://www.suse.com/security/cve/CVE-2017-17566.html
• https://www.suse.com/security/cve/CVE-2017-18030.html
• https://www.suse.com/security/cve/CVE-2017-5715.html
• https://www.suse.com/security/cve/CVE-2017-5753.html
• https://www.suse.com/security/cve/CVE-2017-5754.html
• https://www.suse.com/security/cve/CVE-2018-5683.html
• https://bugzilla.suse.com/show_bug.cgi?id=1027519
• https://bugzilla.suse.com/show_bug.cgi?id=1035442
• https://bugzilla.suse.com/show_bug.cgi?id=1051729
• https://bugzilla.suse.com/show_bug.cgi?id=1061081
• https://bugzilla.suse.com/show_bug.cgi?id=1067317
• https://bugzilla.suse.com/show_bug.cgi?id=1068032
• https://bugzilla.suse.com/show_bug.cgi?id=1070158
• https://bugzilla.suse.com/show_bug.cgi?id=1070159
• https://bugzilla.suse.com/show_bug.cgi?id=1070160
• https://bugzilla.suse.com/show_bug.cgi?id=1070163
• https://bugzilla.suse.com/show_bug.cgi?id=1074562
• https://bugzilla.suse.com/show_bug.cgi?id=1076116
• https://bugzilla.suse.com/show_bug.cgi?id=1076180